"""
打印三角形图案
"""
row = int(input('请输入行数：'))
for i in range(row):
    for _ in range(i + 1):
        print('*',end='')
    print()

for i in range(row):
    for j in range(row):
        if j < row - i - 1:
            print('',end='')
        else:
                print('*',end='')
    print()

for i in range(row):
    for _ in range(row - i - 1):
        print(' ',end='')
        for _ in range(2* i + 1):
            print('*',end='')
        print()